Louisville Tin and Stove VFM204, VFT302, VFT201, VFM303, VFM63 Propane Gas, first stage pipe sizing

TABLE 1 – first stage pipe sizing								PROPANE GAS
10 PSIG Inlet with a 1 PSIG Pressure Drop
Maximum capacity of pipe or tubing, in thousands of BTU/hr. of L.P. Gas
Size of Pipe					LENGTH OF PIPE OR TUBING, FEET*
Or Copper
Tubing, Inches		1 0	2 0	3 0	4 0	5 0	6 0	7 0	8 0	9 0	100
	3/8	558	383	309	265	235	213	196	182	171	161
Copper	½	1387	870	700	599	531	481	443	412	386	365
Tubing	5/8	2360	1622	1303	1115	988	896	824	767	719	679
(O.D.)	¾	3993	2475	2205	1887	1672	1515	1394	1297	1217	1149
	½	3339	2295	1843	1577	1398	1267	1165	1084	1017	961
Pipe	¾	6982	4799	3854	3298	2923	2649	2437	2267	2127	2009
Size	1	13153	9040	7259	6213	5507	4989	4590	4270	4007	3785
	1-1/4	27004	18560	14904	12756	11306	10244	9424	8767	8226	7770
	1-1/2	40461	27809	22331	19113	16939	15348	14120	13136	12325	11642
	2	77924	53556	43008	36809	32623	29559	27194	25299	23737	22422
		125	150	175	200	225	250	275	300	350	400
	3/8	142	130	118	111	104	9 0	8 9	8 9	8 2	7 6
Copper	½	323	293	269	251	235	222	211	201	185	172
Tubing	5/8	601	546	502	467	438	414	393	375	345	321
(O.D.)	¾	1018	923	843	790	740	700	664	634	584	543
	½	852	772	710	660	619	585	556	530	488	454
Pipe	¾	1780	1613	1484	1381	1296	1224	1162	1109	1020	949
Size	1	3354	3039	2796	2601	2441	2305	2190	2089	1922	1788
	1-1/4	6887	6240	5741	5340	5011	4733	4495	4289	3945	3670
	1-1/2	10318	9349	8601	8002	7508	7092	6735	6426	5911	5499
	2	19871	18005	16564	15410	14459	13658	12971	12375	11385	10591

*Total length of piping from outlet of first stage regulator to inlet of second stage regulator (or to inlet of second stage regulator furthest away).

Notes: 1) To allow 2 PSIG pressure drop, multiply total gas demand by .707, and use capacities from table.

2)For different first stage pressures, multiply total gas demand by the following factors, and use capacities from table.

First State Pressure PSIG	Multiply by
2 0	.844
2 1	.912	Data Calculated per NFPA #54 & 58.

TABLE 4 – Second, Single, or Integral Twin Stage Pipe Sizing

11 Inches Water Column Inlet with a ½ Inch Water Column Drop

Maximum capacity of pipe or tubing in thousands of BTU/hr of LP-Gas								PROPANE GAS
Size of Pipe				LENGTH OF PIPE OR TUBING, FEET*
Or Copper
Tubing, Inches		1 0	2 0	3 0	4 0	5 0	6 0	7 0	8 0	9 0	100
	3/8	4 9	3 4	2 7	2 3	2 0	1 9	—	—	—	—
Copper	1/2	110	7 6	6 1	5 2	4 6	4 2	3 8	3 6	3 3	3 2
Tubing	5/8	206	141	114	9 7	8 6	7 8	7 1	6 7	6 2	5 9
(O.D.)	3/4	348	239	192	164	146	132	120	113	105	100
	7/8	536	368	296	253	224	203	185	174	161	154
	1/2	291	200	161	137	122	110	102	9 4	8 7	8 4
Pipe	3/4	608	418	336	287	255	231	212	198	185	175
Size	1	1146	788	632	541	480	435	400	372	349	330
	1-1/4	2353	1617	1299	1111	985	892	821	764	717	677
	1-1/2	3525	2423	1946	1665	1476	1337	1230	1144	1074	1014
	2	6789	4666	3747	3207	2842	2575	2369	2204	2068	1954
		125	150	175	200	225	250	275	300	350	400
	3/8	—	—	—	—	—	—	—	—	—	—
Copper	1/2	—	—	—	—	—	—	—	—	—	—
Tubing	5/8	—	—	—	—	—	—	—	—	—	—
(O.D.)	3/4	—	—	—	—	—	—	—	—	—	—
	7/8	—	—	—	—	—	—	—	—	—	—
	1/2	7 4	6 7	6 2	5 8	5 4	5 1	4 8	4 6	4 3	4 0
Pipe	3/4	155	141	129	120	113	107	101	9 7	8 9	8 3
Size	1	292	265	244	227	213	201	191	182	167	156
	1-1/4	600	544	500	465	437	412	392	374	344	320
	1-1/2	899	815	749	697	654	618	587	560	515	479
	2	1731	1569	1443	1343	1260	1190	1130	1078	992	923
*Total length of piping from outlet of regulator to appliance furthest away.									Data Calculated per NFPA #54 & 58.

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